Accident Moderate Severity Resolved

CHP : Traffic Collision with Injuries on US-101 Southbound exiting at E Poplar Ave (San Mateo). Right lane blocked. Expect delays.

A injury accident was reported on US-101 S near San Mateo on September 19, 2026 at 2:14 AM.

Road

US-101 S

Area

San Mateo

Address

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Started

Sep 18, 7:14 PM

Last Updated

1 month, 1 week ago

Sep 18, 8:30 PM

Resolved

Sep 19, 2:30 AM

Coordinates

37.5803, -122.3244

Update History

3 observations

CHP : Traffic Collision with Injuries on US-101 Southbound exiting at E Poplar Ave (San Mateo). Right lane blocked. Expect delays. Sep 18, 8:30 PM

CHP : Traffic Collision with Injuries on US-101 Southbound exiting at E Poplar Ave (San Mateo). Right lane blocked. Expect delays. Sep 18, 8:00 PM

CHP : Traffic Collision with Injuries on US-101 Southbound exiting at E Poplar Ave (San Mateo). Right lane blocked. Expect delays. Sep 18, 7:30 PM

Source: 511_sfbay · ID 511.org/1551576 First seen Sep 18, 2026 7:30 PM